Victoria (plant)

The giant waterlily is a special plant.

It lives in lakes and streams. Its leaves are very large. They float on the water. The leaves have a high rim. This rim helps them float.

Tiny holes help rainwater escape the leaves. The flowers open at night. They are white the first night. Then they turn pink.

Beetles visit the flowers. This helps the plant grow. These plants are very amazing.

The giant waterlily is a very special plant.

It grows in lakes and streams. Some types live in the Amazon River basin. Others live in the Parana-Paraguay basin. The genus name comes from Queen Victoria.

These plants have massive leaves that float. The leaves have a high rim. Tiny holes called stomatodes let rainwater escape. This helps the leaf stay afloat. The underside of the leaf looks different for each type. The *Victoria amazonica* leaf is red and has hard spines. The *Victoria cruziana* leaf is purple and has soft fuzz.

The flowers open at night. They use thermogenesis, which means they make heat. This heat helps attract beetles. The *Victoria amazonica* flower is white on the first night. It turns pink on the second night. These flowers can be 40 cm wide. People can even use the plant for food. They eat the seeds, stems, and roots.

Some people use the roots to make black dye.

The Victoria plant is a group of amazing waterlilies.

These aquatic herbs grow in lakes and streams. They are famous for having huge floating leaves. One type, called Victoria boliviana, can grow leaves over 1 meter wide.

The name of this group honors Queen Victoria of the United Kingdom. These plants are part of a family called Nymphaeaceae. They are perennial, which means they live for more than two years. They grow from thick parts under the water called rhizomes.

These plants have a very interesting way of working.

The leaves are round and have a high rim around the edge. They have tiny holes called stomatodes. These little holes let rainwater escape so the leaf stays afloat. The undersides of the leaves look very different depending on the species. For example, Victoria amazonica has a red underside with hard spines. Victoria cruziana has a purple underside and feels fuzzy with soft spines. These features help the plant survive in its watery home.

The history of naming these plants is quite busy.

In September 1837, Robert Hermann Schomburgk published the name Victoria. Later that same year, two other men used the name too. John Lindley published it in October 1837. John Edward Gray published it in December 1837. Scientists still sometimes disagree on which person should get the credit. This is a common thing in the study of plant names. It shows how much work goes into organizing the natural world.

There are many specific facts about these beautiful flowers.

The flowers of Victoria amazonica open at night. They can grow up to 40 cm wide. On the first night, the flowers are white. On the second night, they turn pink. These flowers use thermogenesis, which means they can create their own heat. This heat helps attract special insects called scarab beetles. These beetles, specifically Cyclocephala beetles, help the plant reproduce by moving pollen.

You might see these plants in many different places.

Victoria amazonica lives in the Amazon River basin in places like oxbow lakes. Victoria cruziana can be found in the Parana-Paraguay basin. People find these plants very useful in their daily lives. Some people eat the seeds, stems, and roots for food. Other people use extracts from the roots to make black dye. Because they are so pretty, many people grow them as ornamental plants in gardens. They connect the wild world of the Amazon to gardens around the globe.

The genus *Victoria* consists of extraordinary aquatic herbs within the Nymphaeaceae family.

These plants are best known for their massive, floating leaves that can reach impressive sizes. For instance, the species *Victoria boliviana* can produce leaves that exceed 1 meter in width. The genus name was chosen to honor Queen Victoria of the United Kingdom. These perennial plants grow from tuberous rhizomes, which are thick underground stems. These rhizomes also feature contractile adventitious roots to help the plant stay positioned in its habitat.

The physical structure of a *Victoria* leaf is a marvel of biological engineering.

The leaves are orbicular, meaning they are circular in shape, and they are peltate, which means the stem attaches to the center of the leaf. A high rim surrounds the edge of the leaf margin. To prevent the plant from sinking under the weight of weather, the leaf contains stomatodes. These are microscopic perforations that allow rainwater to escape the leaf surface. The underside of the leaf features a complex, reticulate venation pattern that provides structural support.

Different species within the genus can be identified by specific physical traits.

In *Victoria amazonica*, the leaves are glabrous, or smooth, and feature long, hard spines on their red undersides. In contrast, *Victoria cruziana* has a purple underside and is covered in a peach-like fuzz with softer spines. *Victoria amazonica* is typically found in the shallow waters of the Amazon River basin, such as oxbow lakes and bayous. *Victoria cruziana* inhabits the Parana-Paraguay basin. Meanwhile, *Victoria boliviana* is distinguished by its even larger leaves, as well as larger seeds and ovules.

The reproductive cycle of these plants involves complex floral mechanics.

The flowers are nocturnal, meaning they open at night, and they are thermogenic. Thermogenesis is a process where the plant generates its own heat. The flowers are also protogynous, a term meaning the female parts mature before the male parts. A single flower can reach up to 40 cm in diameter. The flower structure includes four prickly sepals that are about 12 cm long. The center contains an androeceum of 150 to 200 stamens and a gynoecium made of 30 to 44 fused carpels.

Pollination is a highly specialized process involving specific insects.

*Victoria amazonica* flowers change color as they age to assist in reproduction. They open as white flowers on the first night and transition to pink on the second night. This process attracts *Cyclocephala* beetles, which are a type of scarab beetle. These beetles act as pollinators as they move between the flowers. The fruit that follows is spiny and can grow between 0 to 15 cm wide, containing seeds that may be smooth or granular.

The taxonomic history of the genus is quite intricate.

Robert Hermann Schomburgk published the name *Victoria* in September 1837. However, two other botanists published the same name in that same year. John Lindley published it in October 1837, and John Edward Gray published it in December 1837. Because of these overlapping publications, there is ongoing scientific disagreement regarding the correct taxon authority. Some sources recognize *Victoria* Lindl., while others view *Victoria* Schomb. as the correct name. This highlights the complexities of botanical nomenclature and historical discovery.

Beyond their biological interest, *Victoria* plants have significant practical uses.

They are widely grown as ornamental plants due to their spectacular appearance. In some cultures, the seeds, petioles, and rhizomes are used as a food source. Additionally, extracts taken from the roots can be used to create a black dye. These plants connect various biological systems, from the specialized behavior of beetles to the complex evolutionary relationships within the Nymphaeales order. Some scientists even suggest that *Victoria* may be closely related to the genus *Euryale* within the broader *Nymphaea* group.